abortion is murder by another name
we should never assume that all aborted children will be in heaven as that would be the best promotion of it when it is in fact God's decision to be gracious to whom He will be gracious
the laws of the land may allow us to murder one another if we feel like it, but its still murder and against God's Commandments that will be judged by Him eternally as with every sin
If God wants to write anyone's name in the book of life then He did it before the foundation of the world and He will bring them to repentance and salvation in Christ (John 6 & Romans 9). His desire is that we all repent and that we do not sin, but that doesn't mean He will draw every single person to Christ, but people from all nations.